This sounds like nonsense , the current console's struggle to do 1080 , especially the xbox . There's no way they will be selling a console that can do 4k soon , absolutely no way they can sell at console prices for a machine that can do 4k.
@gingerbill
I think that PS4/XBO-2 definitely point to an intermediate resolution between FULL HD and UHD, meaning that PS5/XBO-2 handled the 2560x1440p resolution (almost 1.8 times compared 1080p), so it would scale the image up to 3840x2160p (better than do it from 1080p) and obviously also would be able to move the games to 1920x1080p/60fps and VR 1080p/60fps each eye.
PS4 has 1.84 TFLOPs, Samaritan Demo-Cinema (UE4 with SVOGI > amazing ilumination) need 2.5 TFLOPs (1920x1080p x 30fps x 40K operation per pixel) and some ppl say that Nextgen Consoles will have 5x perfomance/watt against PS4, that would give us a 9TFLOPs, but realistically I think that will be 8 TFLOPs ( somethin similar to an AMD R9 Nano with 4GB HMB 1.0, but with HMB 2.0).
http://I.kinja-img.com/gawker-media/image/upload/s--kBhsnqUB--/18j0rl4losigjpng.png
http://techreport.com/r.x/2015_8_26_Radeon_R9_Nano_to_pack_a_wallop_at_649/specs.jpg
* OPP = Operation per pixel, so:
- Best looking PS4 Games (30fps) > 1600x900p x 30fps x 40K opp = 1.7 TLOPs
Most PS4 games > 1920x1080p x 30fps x 30K opp = 1.8 TLOPs
- PS5 FHD/30 > 1920x1080p x 30fps x 120K opp = 7.5 TFLOPs
- PS5 FHD/60 > 1920x1080p x 60fps x 60K opp = 7.5 TFLOPs
- PS5 VR FHD > 1920x1080p x 60fps (each eye) x 30K opp = 3.7 TFLOPs x2.
- PS5 1440p > 2560x1440p x 60fps x 40K opp = 8.8 TFLOPs
> 2560x1440p x 30 fps x 80K opp = 8.8 TFLOPs
> VR 1440p > 2560x1440p x 60fps (each eye) x 20K opp = 4.4 TFLOPs x 2.
- PS5 UHD > 3840x2160p x 30fps x 30K opp = 7.5 TFlops (40K opp = 10 TFLOPs)
> 3840x2160p x 60fps x 30K opp = 15 TFLOPs 40K opp = 20 TFLOPs)
So I think a PS5 for 2560x1440p resolution, it would be more realistic and consistent with the 5x improvement of performance per watt that certain people has spoken.